UDD 450DX Sleeping BagThe UDD is the real deal. Serious business. This bag is near the top of Nanga's lineup and boasts a DWR treatment so you can stay warm in soggy situations. It's constructions utilizes a trapezoidal box baffle, this maximizes the down's "loft," and efficiently insulates by minimizing clumping and heat release. Made from Spanish Duck Down 90 10% (760FP) 1,045g 2. 3 lbs 5CT Comfort 10C T Limit DWR treated down Packed Size: 17 31 cm Comes with soft bag